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barrier destroy must also wait for threads in other processes exiting barrier

the vm lock only waits for threads in the same process exiting.
actually this fix is not enough, but it's a start...
Rich Felker 13 vuotta sitten
vanhempi
sitoutus
8f4a115e7d
1 muutettua tiedostoa jossa 2 lisäystä ja 0 poistoa
  1. 2 0
      src/thread/pthread_barrier_destroy.c

+ 2 - 0
src/thread/pthread_barrier_destroy.c

@@ -5,6 +5,8 @@ void __vm_lock(int), __vm_unlock(void);
 int pthread_barrier_destroy(pthread_barrier_t *b)
 {
 	if (b->_b_limit < 0) {
+		int seq = b->_b_seq;
+		if (seq & 1) __wait(&b->_b_seq, 0, seq, 0);
 		__vm_lock(-1);
 		__vm_unlock();
 	}